20817360

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{997}}^1$

素因数の和:1045

約数の個数: 120

約数和(自身を含む): 72394920

約数和(自身を除く): 51577560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 116, 120, 144, 145, 174, 180, 232, 240, 261, 290, 348, 360, 435, 464, 522, 580, 696, 720, 870, 997, 1044, 1160, 1305, 1392, 1740, 1994, 2088, 2320, 2610, 2991, 3480, 3988, 4176, 4985, 5220, 5982, 6960, 7976, 8973, 9970, 10440, 11964, 14955, 15952, 17946, 19940, 20880, 23928, 28913, 29910, 35892, 39880, 44865, 47856, 57826, 59820, 71784, 79760, 86739, 89730, 115652, 119640, 143568, 144565, 173478, 179460, 231304, 239280, 260217, 289130, 346956, 358920, 433695, 462608, 520434, 578260, 693912, 717840, 867390, 1040868, 1156520, 1301085, 1387824, 1734780, 2081736, 2313040, 2602170, 3469560, 4163472, 5204340, 6939120, 10408680, 20817360]

約数ペア:

[(1, 20817360), (2, 10408680), (3, 6939120), (4, 5204340), (5, 4163472), (6, 3469560), (8, 2602170), (9, 2313040), (10, 2081736), (12, 1734780), (15, 1387824), (16, 1301085), (18, 1156520), (20, 1040868), (24, 867390), (29, 717840), (30, 693912), (36, 578260), (40, 520434), (45, 462608), (48, 433695), (58, 358920), (60, 346956), (72, 289130), (80, 260217), (87, 239280), (90, 231304), (116, 179460), (120, 173478), (144, 144565), (145, 143568), (174, 119640), (180, 115652), (232, 89730), (240, 86739), (261, 79760), (290, 71784), (348, 59820), (360, 57826), (435, 47856), (464, 44865), (522, 39880), (580, 35892), (696, 29910), (720, 28913), (870, 23928), (997, 20880), (1044, 19940), (1160, 17946), (1305, 15952), (1392, 14955), (1740, 11964), (1994, 10440), (2088, 9970), (2320, 8973), (2610, 7976), (2991, 6960), (3480, 5982), (3988, 5220), (4176, 4985)]